| Patents for John Johnston |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 78,752 | Jun. 09, 1868 | T. Milner | Improvement in circular-saw guides | circular saws |
| 533,978 | Feb. 12, 1895 | J. Johnston, A. Whitney | Milling-machine | bicycle machinery |
| 635,976 | Oct. 31, 1899 | J. Johnston, J.C. Potter | Lathe-chuck | metal lathe chucks |
| 649,175 | May 08, 1900 | J. Johnston, J.C. Potter | Shaping Machine | |
| 761,905 | Jun. 07, 1904 | J.C. Potter, J. Johnston, E.B. Sellew | Gearing | metal lathes |
| 772,477 | Oct. 18, 1904 | J. Johnston, J.C. Potter | Turret-lathe | turret lathes |
| RE12,287 | Nov. 22, 1904 | J. Johnston, J.C. Potter | Shaping Machine | |
| 849,697 | Apr. 09, 1907 | J.C. Potter, J. Johnston | Clutch | metal lathes |
| 887,197 | May 12, 1908 | J. Crahan, J. Johnston | Saw set | saw sets |
| 942,843 | Dec. 07, 1909 | J.C. Potter, J. Johnston | Gearing | turret lathes |
| 991,886 | May 09, 1911 | J. Johnston, J.C. Potter | Turret Lathe | turret lathes |
| 1,115,972 | Nov. 03, 1914 | J.C. Potter | Automatic turret-lathe | turret lathes |
